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Dry Sliding Wear and Mechanical Characterization of Mg Based Composites by Uniaxial Cold Press Technique

Selva Kumar P., Ponappa K., Udhayasankar M., Aravindkumar B.

Archives of Metallurgy and Materials

2017

Vol. 62, iss. 3

1851--1856

Dry sliding wear tests are performed on magnesium composites produced by uniaxial cold press technique by using pin-on-disc. Co-efficient of friction and wear rate of magnesium composites are measured under a load of 5 N and sliding velocity of 0.2 ms-1 . Porosity, Vickers’s micro hardness, X-Ray Diffraction (XRD) results are presented to characterize the physical and mechanical properties of magnesium composites. Worn surfaces are inspected by Scanning Electron Microscope (SEM) and Energy Dispersive X-ray Spectroscopy (EDS). Three types of wear mechanisms namely abrasive, adhesive and oxidation were observed. The wear rate was found to be low for 2wt% of HAP (3.6×10–6cm3/m) and co-efficient of friction was observed as 0.8.